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ULF (ultra low frequency) electromagnetic waves, produced in thedepths of outer space, have been observed with wavelengths of19 million kilometers. What is the period of such a wave?
__________? s
the index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. a beam of white
Two converging lenses are separated by 23.20 cm. The focal length of each lens is 12.20 cm. Determine the final image distance relative to the lens on the right
The atmospheric density at an altitude of 2500 km is about 1 molecule/cm3. find the mean free path predicted by the equation below
The two blocks are on frictionless inclines and are in static equilibrium. The block on the left has a mass of 49 Kg, and the block on the right has a mass of n3 Kg. If the left incline has the length of n1 meters, and the right incline the length of..
A man moves the 10-g object shown in a vertical plane from position X to position Y along a circular track of radius 20 m. The process takes 0.75 min. The workdone by the man is about:
there are 2 charges 3.5 microcoulmb and 5.2micro coulomb located at -4 cm 0 and 4 cm 0 respectively.a determine the
The maximum characteristic x-ray photon energy comes from the capture of a free electron into a K shell vacancy. What is this photon energy in keV
A baggage handler drops your 8.70 suitcase onto a conveyor belt running at 1.60 . The materials are such that = 0.560 and = 0.170. How far is your suitcase dragged before it is riding smoothly on the belt?
A 1000 kg rocket carrying 4000kg of fuel is travelling at 200 x m/s It burns and ejects 100kg of exhaust with a relative velocity of ?400x m/s , What is the final velocity of the rocket after this
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 39.1 J, What is the kinetic energy of the system at the equilibrium point
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 7.948 g, is pressed into a leaf of 1.547 m thickness.
The mass of a bottom quark is 4.20Gev/c^2 and was found by colliding a beam of protons with a cloud of stationary protons. How fast were they moving
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